[9.1] EQL: better error message for sequences with only one clause plus UNTIL (#132638)#132794

elasticsearchmachine merged 1 commit intoelastic:9.1elastic/elasticsearch:9.1from

luigidellaquila:backport/9.1/pr-132638luigidellaquila/elasticsearch:backport/9.1/pr-132638Copy head branch name to clipboard